| 转角阻尼器对海洋平台-摇摆墙体系抗振分析 |
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| 引用本文： | 张纪刚,刘菲菲,韩永力,苏锐.转角阻尼器对海洋平台-摇摆墙体系抗振分析[J].海洋工程,2016,34(2):10-15. |
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| 作者姓名： | 张纪刚 刘菲菲 韩永力 苏锐 |
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| 作者单位： | 1. 青岛理工大学 土木工程学院,青岛 266033; 2. 蓝色经济区工程建设与安全协同创新中心，青岛 266033;1. 青岛理工大学 土木工程学院,青岛 266033; 2. 蓝色经济区工程建设与安全协同创新中心，青岛 266033;1. 青岛理工大学 土木工程学院,青岛 266033; 2. 蓝色经济区工程建设与安全协同创新中心，青岛 266033;1. 青岛理工大学 土木工程学院,青岛 266033; 2. 蓝色经济区工程建设与安全协同创新中心，青岛 266033 |
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| 基金项目： | 国家自然科学基金资助项目（51378271）；中国博士后科学基金资助项目（2013M530307）；山东省博士后创新项目专项资金资助项目(201302020) |
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| 摘 要： | 在海洋平台摇摆墙体系基础上,提出在海洋平台和摇摆墙之间刚性连接杆的铰接点处安装粘弹性转角阻尼器的减振措施,对海洋平台进行进一步减振控制。对粘弹性转角位移阻尼器的刚度和阻尼参数进行了优化分析,可知阻尼器的阻尼与刚度在结构减振中起到了十分重要的作用,且存在特定范围内的优化值。以JZ20-2北高点井口平台为例,利用ANSYS进行地震荷载作用和实测挤压冰荷载下的仿真分析,研究了粘弹性转角阻尼器在海洋平台和摇摆墙之间刚性连接杆铰接点处的不同安装方式,对比分析减振效果。结果表明,在该体系刚性连接杆的铰接点处安装粘弹性转角阻尼器能显著降低结构的振动反应,连接杆右侧安装粘弹性转角阻尼器的方式为减振效果最佳方式。
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| 关 键 词： | 海洋平台 摇摆墙 粘弹性转角阻尼器 地震作用 冰荷载 |
Analysis of vibration performance of offshore platform with rocking wall system installing viscoelastic rotary dampers |
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| ZHANG Jigang,LIU Feifei,HAN Yongli and SU Rui.Analysis of vibration performance of offshore platform with rocking wall system installing viscoelastic rotary dampers[J].Ocean Engineering,2016,34(2):10-15. |
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| Authors: | ZHANG Jigang LIU Feifei HAN Yongli and SU Rui |
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| Institution: | 1. School of Civil Engineering, Qingdao Technological University, Qingdao 266033, China; 2.Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao 266033, China;1. School of Civil Engineering, Qingdao Technological University, Qingdao 266033, China; 2.Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao 266033, China;1. School of Civil Engineering, Qingdao Technological University, Qingdao 266033, China; 2.Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao 266033, China;1. School of Civil Engineering, Qingdao Technological University, Qingdao 266033, China; 2.Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao 266033, China |
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| Abstract: | This paper introduces the installation of the viscoelastic rotary dampers at the hinged points of rigid connection rods between the offshore platform and the rocking wall as the measure of vibration mitigation, which is based on the offshore platform-rocking wall system , for further vibration control of offshore platform. The stiffness and damping parameters of the viscoelastic rotary dampers are analyzed and optimized. The results show that damping and stiffness play a very important role in structural vibration dissipation, and that the optimum values for stiffness and damping parameters exist within a specific range. Taking the JZ20-2 north high offshore platform as an example, its simulation analysis is done under earthquake loads and in-situ measured push ice load using ANSYS, to study different installations of viscoelastic dampers at the hinged points of rigid connection rods between offshore platform and rocking wall, and the control effects are compared. The results show that the installation of viscoelastic rotary damper at the hinged points of the rigid connection rods can reduce significantly the vibration response of the structure, and that the installation of the viscoelastic rotary dampers at the right side of the rigid connection rods can have the best control effect |
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| Keywords: | offshore platform rocking wall viscoelastic rotary damper earthquake action ice load |
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